Motorola APX 1000 Manual page 36

ADVANCED FEATURES
 Global Positioning System/ Global Navigation Satellite System
GPS Operation
The GPS technology uses radio signals from earth orbiting satellites, to establish the location coordinates, maximizing your view
of clear unobstructed sky is essential for optimum performance.
Where adequate signals from multiple satellites are not available (usually because you cannot establish a view of a wide area of
the sky), the GPS feature of your radio will not work. Such situations include but are not limited to:
• Underground locations
• Inside of buildings, trains, or other covered vehicles
• Under any other metal or concrete roof or structure
• Between tall buildings or under dense tree-cover
• In temperature extremes outside the operating limits of your radio
Even where location information can be calculated in such situations, it may take longer to do so, and your location estimate may
not be as accurate. Therefore, in any emergency situation, always report your location to your dispatcher.
Keep in mind that the accuracy of the location information and the time it takes to obtain it varies depending upon circumstances,
particularly the ability to receive signals from an adequate number of satellites.
Note: Even where adequate signals from multiple satellites are available, your GPS feature only provides an approximate
location, usually within 10 meters from your actual location, but sometimes farther away.
The satellites used by the GPS feature are controlled by the U.S. government and are subject to changes implemented in
accordance with the Department of Defense GPS user policy and the Federal Radio Navigation Plan. These changes may affect
the performance of the GPS feature on your radio.
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